Edward p



(No Model.) 2 Sheets-Sheet 1. E. P. GWYNN.

ELECTRIC ARC LAMP.

No. 522,790. Patented July 10, 1894.

WITNESSES: g IgVNTOR BY v 7 W ATTORN EYd D- denotes the detent by whichthe minute-wheel O is held at rest during the operation of printing.Said detent is of the form of a pawl adapted to enter into the notchesof the wheel -D and supported on a shaft 11- pivoted to suitablesupports secured to the case -A. A spring-arm vis connected by a rod -u"to the crank eof the rock-shaft cand thus the detent is thrown intoengagement with the wheel D simultaneously with the lifting of theimpression roller R to imprint the paper mounted thereon.

The front-plate of the case A is provided with an annular row of socketsrr arranged concentric to the shaft-a, and from the free end of thelever I- projects a pin -I- adapted to enter said sockets. These socketsare numbered consecutively, and each person who is required to use therecorder must adopt one of said numbers to identify said person from allothers using the same recorder.

In recording the time of entering or leaving the place of business eachemploy must turn the lever I- so as to bring the pin --I opposite thenumber by which said employ is identified. Then by pushing the levertoward the case -A the plunger g is actuated to arrest the movement ofthe minute-wheel O and lift the impression roller -R- to print the timeupon the paper mounted on said roller. Said paper is so arranged on theroller as to bring directly under the printing wheel O- that numbermarked on the paper which corresponds to the number of the socket -r--which is entered by the pin -I in the operation of the lever -I.

In order to allow the recordings during different periods of the day tobe made distinctly on the band of paper, I make the latter and itscarrying roller R- of sufficient width to allow the different times ofrecording to be printed in rows opposite the respective numbers markedon the paper, and to allow the roller to be shifted laterally and thuspermit the printing to be done at different pointsin the width of thepaper I mount said roller loosely on its shaft a" and connect it theretoby a spline in the hub of the wheel entering a longitudinal groove -sinthe shaft.

A horizontal shaft -.I- pivoted so the interior of the case andprotruding'at the front thereof has affixed to its outer end a handleJ-- by which to turn it, and a dial on the front of the case andconcentric to the shaft J- is marked to indicate the position of thehandle required for adjusting the roller R- laterally as aforesaid. Tothe shaft .I- is fastened a gear-wheel jwhich meshes with a pinion k onthe worm-shaft -jparallel with the shaft -J- and On this worm shaft ismounted a collar which engages the spiral groove of the worm and is thuscaused to move longitudinally when the worm is rotated. An arm --7c=exframe of the machine.

tending from said collar has affixed to it a laterally projecting'tongue-7c which engages a circumferential groove in the hub 7.:' of the rollerR and therefore compels said roller to move laterally whenthe worm-shaftis rotated. V

The hour-wheel O has the numbers from 1 to 12 projecting from itsperiphery and receives one-twelfth of a revolution at the end of eachcomplete revolution of the minute-wheel O. This may be effected bymechanism similar to that shown in my prior application for patent,Serial No. 451,602, flied November 11, 1892, and it consists of thelever p pivoted at the central portion of its length to a yoke Y-attached to the Said lever has one end engaging a ratchet wheel X fixedto the shaft of the hour wheel. The opposite end of said lever lies onan annular flange on the side of the minute-wheel, which flange has anotch -a which allows the lever to rock and thereby release the ratchetwheel. A lug 0c' on the minute-wheel then enters between twofof theteeth of the ratchet-wheel and causes the same to turn one-twelfth partof a revolution. There are twelve teeth on the said ratchet, hencetwelve revolutions of the minute wheel imparts one complete revolutionto the hour wheel.

Having described my invention, what I claimas new, and desire to secureby Letters Patent, is=

1. In combination with the time-printing wheel and a revolubleimpression roller, a lever turning said roller, a rock-shaft moving saidroller toward the printing wheel, and a plunger operated by the leverand actuating said rock-shaft, as set forth.

2. In combination with the time-printing wheel, a horizontal crankshaft, props mounted on the cranks of said shaft, a shaft mounted onsaid props, the impression roller mounted on the latter shaft, arock-shaft transmitting motion to the aforesaid crank-shaft, a leverturning the shaft of the aforesaid roller, and a plunger actuated bysaid lever and imparting motion to the rock-shaft, as set forth.

3. In combination with the time printing wheel, a horizontal shaftmounted on vertically movable supports, an impression roller mounted onsaid shaft, 2. second horizontal shaft disposed end to end with thefirst shaft, disks on the adjacent ends of said shaft, lugs on theadjacent faces of the disks and disposed on one disk in a line at rightangles to that of the lugs on the other disk, and a disk interposedbetween the aforesaid disks and provided with slots at right angles toeach other and receiving the aforesaid lugs in the manner set forth.

a. In combination with the printing wheel, the shaft -=amounted onvertically movable supports, the impression roller R- mounted on saidshaft, the hollow shaft a--, disks 1 and 3 on the said shafts providedwith lugs -cZ-cZ-, the intervening IIO UNITED STATES PATENT, OFFICE.-

EDWARD F. G /VYNN, OF DELAWARE, OHIO.

ELECTRIC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 522,790, dated July 10,1894.

Application filed April 28, 1893. Serial No. 47 (N model) To all whom itmay concern:

Be it known that I, EDWARD F. GWYNN, a citizen of the United States,residing at Delaware, in the county of Delaware and State of Ohio, haveinvented certain new and useful Improvements in Electric-ArcLamps, ofwhich the following is a specification.

My invention relates to improvements in electric arc lamps; and theobject of my invention is to provide anovel device for feeding thecarbon, by means of which a regular and steady light may be obtained;the especial object of the invention being to provide means by which thecarbon is regularly and uniformly fed under the ordinary conditions ofburning; means being provided by which the carbon may be instantaneouslyor rapidly fed to establish the arc in the event that'the current shouldmomentarily cease from the flashing of the dynamo or from other causes.

A further object of my invention is to provide novel means forautomatically short circuiting or cutting out the lamp in the event thatthe current should become interrupted through the ordinary channel fromunusual causes connected with the lamp itself.

I attain these objects by the constructions shown in the accompanyingdrawings, in Which- Figure 1 is a side elevation view of devicesembodying my invention; the devices being illustrated more in the natureof a diagram than as a completed lamp. Fig. 2 is a side elevation of aportion of the same. Figs. 3 and 4 are details hereinafter referred to.

Like parts are represented by similar letters of reference in theseveral views.

In the accompanying drawings a and 1) represent the carbons, betweenwhich the arc is formed. The upper carbon is supported by a carbon roda, to which it is connected by a suitable clamp a in the usual manner.This carbon rod is provided with a series of teeth a in the nature of arack, adapted to be engaged by a pinion a, mounted on a shaft a which isadapted to be revolved by a train of gears similar to the gearing of anordinary clock, and controlled by an ordinary clock escapement,consisting of the escapement wheel 0, pallets 0', connected to asuitable pendulum or weight 0" All the gearing thus described issupported on a frame or lever e, which is pivoted at e, to any suitableportion of the outer frame or supports of the lamps. This pivotedsupporting lever or frame (2, is connected at its opposite end to thearmature f, of a solenoid f, which is arranged in the main circuit ofthe lamp.

Located below the lever or frame (2, preferably below the armature f,of, the solenoid f,- is an adjustable stop e with which the supportingframe or lever e, is adapted to contact, when the lamp is in the normalposition, without current, and in which position the carbons a and b,rest in contact with each other. WVhen the current is turned onto thelamp the solenoid f, acts on the armature f, and raises the lever e, tothe position shown in Fig. 1 and with it the gearing supported thereon,together with the carbon rod a, and the carbon a, sustained by saidgearing. The pendulum or verge which supports the pallets c, is providedwith a downwardly projecting spur cl, adapted to contact with a similarup wardly projecting spur d, on, a pivoted lever d pivotally connectedto the armature g, of a solenoid g, arranged in the shunt of the arc; aspring g being adapted to act against the force of said solenoid toraise the lever d and bring the spurs d, d, in contact; a suitableadjusting screw 9 being provided to vary the tension of the spring 9 asdesired.

In the normal position the spurs d d, are in contact, which preventsamovement of the escapement and thus of the gearing. In the event thatthe arc becomes too great the current is deflected through the solenoidg, which, attracting the armature g, draws down the lever (1 and with itthe spur d, thus freeing the pendulum or verge which is actuated by theweight of the carbon and carbon rod, and thus permits the upper carbonto feed gradually until the proper resistance at the arc is established,in which case the spring g returns the parts to their normal position soas to engage the pendulum and stop the operation of the gears.

The description thus far applies to the normal working of the lamp andthe feeding of the carbon. It sometimes happens, however, that thecurrent momentarily ceases and the arc is broken. In this case the levere, drops down to the adjustable stop e and in the event that the carbonsdo not meet, the are solenoid in the shunt of the are adapted todisconnect said switch from said lever or frame, substantially as andfor the purpose specified.

In testimony whereof I have hereunto set my hand this 24th day of April,A. D. 1893.

EDWARD F. GWYNN.

Witnesses:

J. A. BRADSHAW, A. J. WILLEY.

